Variable-size induction heating plate

Abstract

A variable-size induction heating plate includes a plurality of windings (10a, 10b, 10c, 10′a, 10′b, 10′c) arranged in a cooking surface. The heating plate includes two sets (10, 10′) of a plurality of windings arranged side-by-side, each set (10, 10′) of windings being adapted in such a way as to form a heating plate, and control elements (12, 12′, 13) which are adapted in such a way as to control the operation of the sets (10, 10′) both in an independent manner and a synchronous manner. Each set of windings is fed by a single current generator (11, 11). The inventive heating plate can be used in an induction cooking surface.

Description

BACKGROUND OF THE INVENTION[0001]1.Field of the Invention[0002]The present invention concerns a variable-size induction heating plate, and an induction cooking surface integrating such a plate.[0003]2. Description of the Related Art[0004]The present invention applies generally to the field of domestic induction cooking appliances, such as induction vitroceramic cooking surfaces.[0005]An induction heating plate generally consists of a circular winding adapted to the dimension of a cooking vessel of given size.[0006]It can equally consist of a plurality of concentric windings enabling adaptation to different diameters of vessels disposed on the cooking surface above the plate.[0007]A heating plate can equally consist of a plurality of windings disposed side by side and supplied with power by independent generators, as described in patent application FR 2 758 994.[0008]Also known are cooking surfaces comprising a plurality of small windings disposed in a cooking surface. One such cooki...

AI Technical Summary

Benefits of technology

The patent describes an induction heating plate that can function as two smaller plates or as a single larger plate, depending on the needs. Each set of windings has at least three equidistant windings, which allows for even heating across the plate covering a vessel's bottom.

Problems solved by technology

However, as a function of the position of the vessel on the cooking surface, it is not rare for a significant proportion of a group of windings not to be covered by the vessel, with the result that the power delivered by the induction winding is low.

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